Revert "Rename application/VERSION to application/GITCOMMIT"

This reverts commit feb27b8a02.

.gitattributes

@@ -8,4 +8,4 @@ Vagrantfile export-ignore
 .puppet* eol=lf
 
 # Include version information on `git archive'
-/application/GITCOMMIT export-subst
+/application/VERSION export-subst

icingaweb2.spec

@@ -204,7 +204,7 @@ rm -rf %{buildroot}
 %{basedir}/application/forms
 %{basedir}/application/layouts
 %{basedir}/application/views
-%{basedir}/application/GITCOMMIT
+%{basedir}/application/VERSION
 %{basedir}/doc
 %{basedir}/modules
 %{basedir}/public

library/Icinga/Application/Version.php

@@ -18,8 +18,7 @@ class Version
     public static function get()
     {
         $version = array('appVersion' => self::VERSION);
-
-        if (false !== ($appVersion = @file_get_contents(Icinga::app()->getApplicationDir('GITCOMMIT')))) {
+        if (false !== ($appVersion = @file_get_contents(Icinga::app()->getApplicationDir('VERSION')))) {
             $matches = array();
             if (@preg_match('/^(?P<gitCommitID>\w+) (?P<gitCommitDate>\S+)/', $appVersion, $matches)) {
                 return array_merge($version, $matches);